Table 2 Otoscopic, adudilogical, and vestibular assessments of the patients
From: Benign paroxysmal positional vertigo: a multi-center study
| Â | Number | Percent |
|---|---|---|
Otoscopic examination | ||
 Normal tympanic membrane | 100 | 87.7% |
 Dull | 10 | 8.8% |
 Retracted | 2 | 1.75% |
 Perforated | 2 | 1.75% |
Pure tone audiometry | ||
 Normal hearing | 84 | 73.7% |
 High-frequency hearing loss | 24 | 21% |
 Sever SNHL | 4 | 3.5% |
 Mid-frequency SNHL | 2 | 1.75% |
Tympanometry | ||
 Type A | 108 | 94.7% |
 B | 4 | 3.5% |
 Perforated | 2 | 1.75% |
Dix Hall Pike | ||
 Upbeating torsional nystagmus | 106 | 93% |
 Down beating torsional nystagmus | 4 | 3.5% |
 Negative | 4 | 3.5% |
Supine roll test | ||
 Left geotropic nystagmus | 4 | 3.5% |
 Negative | 110 | 96.5% |
Deep midline head-hang position | ||
 downbeat nystagmus | 4 | 3.5% |